If Twitter wasn't willing to at least attempt to moderate then yes. What's going on here isn't new. Web hosting services have been dropping hate speech platforms and forums since the internet began.
The real problem is that is seems like the hate speech/Qanon wing of the right side of the political spectrum has the loudest voice and it's ruining it for actual conservatives.
Parler's response was a casual finger back to Amazon, and the response was a swift boot.